Concrete form



March 14, 1933. .1. s. FREDERICK 1,901,

CONCRETE FORM Filed July 51, 19:50 6 Sheets-Sheet 1 March 14, 1933.

J. s. FREDERICK 1,901,392

CONCRETE FORM Filed July '51, 1930 6 Sheets-Sheet 2 3mm J EFrecZaricA aw 6% 6 I v F5 6 a 2 7 6 a y a /w March 14, 1933. 5 FREDERICK 1,901,392

CONCRETE FORM Filed July 51, 1930 6 Sheets-Sheet 2 March 1933' Q J. 5.FREDERICK Y 1,901,392 I CONCRETE FORM Filed July 31, 1930 6 Sheets-Sheet5 1 27.15. F29. 15.

M /76 79 V \W I [Ill 79 March 14, 1933. 4,5 FREDERICK 1,901,392

CONCRETE FORM Filed July 51, 1950 e Sheets-Sheet 6 I 8mm .H L. 5'.Frederick 87 abroump Patented Mar. 14, 1933 1 we e; ems-nee; rm snmm rLpplicetiom flled' July- 81;

This invention relates toQc ncr ete. forms and more particularly tomolds or forms by use of which buildings ofthe poureclconcrete type-mabe erected. 7

. One ject of the-inventionisto protide' a-formorl-mold ottheknockdown:type which may be very. easily ecected and. through the. use of. whichvarious perts-ota-building may be molded andvthe mold. taken apart afterthe concrete has set. and .again set up for Anotherob'jectvoftheinvention is to: so.

form'the elementsconstituting the'improved form or moldthat they maybeuseddor.

15 straight-wall sections or. for forming corner portions of a. buildingand fnrtherlto so,

construct; the sections that a; corner portion. of. any mgledesired-maybe moldedend. alsoihave a. portion of a wall heingimolded. eittendeither pcrpendicularlyor at an; in

- Anotherv ohject oi the invention is tier mit aowall to 'be iormed ofaneverr thic'k-- ness throughout JtS' height or have -a-,pordon-reducedin thickness towards its top...

Another objectof the; invention to so form sections or elements of themold that they may be used to form either, an inside or outside wall ofa. .mold,- thereby causing erected. I v Another ob ect of theinvention-ism pro.- vide improved "joints for use at] ,cormars2 of;

7 Another object of thcinvention iseto pro-1 v'ide themold 1 withfillers :adapted 'lto-obe' set length in case sectionsof 'a' regulationlength; are toolongor-too short-i Another object of the invention is tonot; only allow w all's'fto be molded lint also ptirtitions of abuilding, and'lin addition p'erinit doors andf windows :in'diin'sidetrim .to'h l prpvidedifqr. V V i v: I Another hjectof thein nfi n me l wpanying drayvings, wherein this invention,

theiaections tobe interchangeable and facilt tating-the-ease with whicha. mold. may ,-be-

a building and: to .so 'iorm these joints; that. the mold formingsections may he; disposed;v indesirednngular relation to each'other. r 1

' in prlace in orderto'for-m a noldlof a'desi'red 1930. Serial No.472,005.

allottpsi fling strips'to hesetin ti aeiiduiin moldin ofawall.

I Ano er object of the invention isftohot only ellow the forms tolieusedfor molding.

wallscffe biiilding but also permit themto. 55

be ,used for molding chimneys, fire walls and} other portionsfof ebuilding suchles'posts, columns, floors, ,roofs or casings for struce:tural beams. i

The invention is illilstreted in the ,Eigure. a perspectiveview of a'fnortion of a inold formed in aceordence. I witli Fig. 2 I is ahorizontal? sectional View through an inner wall of a. mold formed: inaccordance with this invention, I

. 3;is a perspectiye .viexyvv of sjbracket for connecting sections atcorner ofI.the. i: T

Fig. 4; is apetspective; viewof'a modified form of c"rnerlbracketallotting angular eds,

justinents, V v v o Fig. 5 is. at perspective ,lview of another modifiedformer cornerbra-cket, 7 if;

Fig. 6 'is 'a perspective 'view'of-I e; corner bracket so constructedthat. portionsthereof may; have: universal movement relative to eachother, i

,Fig. {is a viewopertiallydin elecation 183' partially. in sectionoften. modified-form of moldc zwellferec'ted ,in accordance. with. thisinvention} '1 Fig. 8. is .t p ,1a.n View oflthe inold wall showngin 7, I

Fig, 7 9 is e horizontall sectional view taken. qn helin Ic g 7 1. .v

Fig flq. is eillfpe'spective,View ofya filler used whenlerecting themoldshown in Fig; ,7, I :11 is a perspective iew of anotherfillerconstitiiting partfof the moldishown' in 1 Fig.l2]is.a...perspectii e View of. a filler hichissometvhat similar, tothat disclosed inFig'; 11 but of 'amodified-constructi on,

Fig. :13 is a se'ctional View showing the manner of erecting a moldto.forrnza Window;

opening itindfadj oining portions of, a Wall,

Fig. .1i s tLv i Wv takcnon the line 14-44 iFi -l' s yh w n t m n e iwhi boards, or veneering or a joists are secured in proper spacedrelation during forming of a wall,

Fig. 15 is a bottom plan View of Fig. 14, Fig. 16 is a sectional Viewshowing the manner of forming a door opening in a wall,

Fig. 17-i's a view in endielev'ation looking from the left in Fig:16,

Fig. 18 is a sectional view taken vertically through a Wallduring-construction ofthe,

same,

Fig. 19 is a view in end elevation shtn ving the manner of forming awall mold which tapers upwardly, Fig. 20 is a View showing in endelevation spacers to be disposed between walls of the mold, Fig. 21 is aside elevation showing the manner-"in which mold sections are to beerected-in order to form a Wall having a sloping end, I p g Fig. 22 1s aperspect ve View of a wall formed in accordance with this invention andhav ng atapered or sloping corner p'ortion',

Fig. 23 is atop plan view"'showing' the manner in which mold sectionsare erected to form a chimney.

Fig. .24; is a perspective viewxof a cleat used when mold sections areerected as shown in Fig. 23, 1 1 Fig. 25 is a verticalsectional viewtaken transversely through a portion" of a'w'all formed in accordancewith this invention, F 1g. 261s a sectional V ew showlng'. the

manner in which 1am upper portion of a fire wallor other walls may beformed in erected and filled with concrete, lower molds being. "removedafter the c ncrete has, set and placed upon upper 'molds "which arefilledwithconcrete inthe process of'sett'ing. The inner wall of the moldis indicated in general by the numeral 1 and the outer wall by thenumeral 2 and each wall consists of sections 3 which maybe of any lengthdesired and also of'any height. Bars 4'extend longitudinally of eachsection andare connected by a suitable'number of cross bars 5', therebyforming a frame to which'a facing 6 is secured" and this facing maybeformed of sui ab e c mp iplan View showing'rhold partition for aperspective View of a corner tion. The sections 3 are all of the sameconstruction and may be used to form either an inner or an outer walland when in use may have either bar 4 uppermost. Cleats or connectingbars 7 are secured to the bars 4 of one section by bolts 8 which arepassed through-f slots 19 {formed "in the -'cl 'eat's and may be "passedthrough'slots 10 01 openings 11- formed through the bars 4. The outerends of these cleats overlap the bars 4 of a companion 'or'"- meetingsection and are wformed-;cwith slots 12 through which are passed bolts13 and these bolts are engaged t-hrough'slotsor-openings of the bars 4of the companion mold section in order to secure the two sections-together. 'lherefore',:the

- two sections may form 'c'orner portionsof an outer wall 'ofiamold.Afiller 14; carryinga facing'sheet of metal 15 'is'set in place, as

shown in F igure1, in order to complete-the corner and it shouldbenote'd that the facing sheet"proj'ects' at one or both sides ofthefiller in order to form a smooth joint. -A' cross 1m 1.6 extendstransversely of the filler 14.- with its ends projectingfrom-oppositesides thereof and this cross bar has its ends formed withnotches 17 through which bolts or otherfasteners-may be passed inorderto firmly hold the filler in engagement with the niain wallsection; When the wall sections-"are used 'to'form portions of a mold'intermediatethe corners of a wall of'a building,' the wall sections aredisposed in end to end relation to each other in which case the bars 4extend 1n longitudinal ahnement with the cleats 7 overlaplping theiradjacent ends where they are firi'n y secured-bytightening'the bolts 13.The filler 14 willflbe set in place with its facing l5 overlapping= endsa #0 1 joint between the wall-sections."="

he inner wall 1 ofthe' mold is'formedof' sections-havin the sameconstruction :as

of the facings'tl of the mold sections toform those from WlllCllthBouter wall is formed and a filler 14 maybe 'setfin place-if foundnecessary. The rejecting side portions: of

the filler facing s eet 15 permits the sections l tobe spaced from eachother a s'uflicient dlsta'nce toallo-w for exp'ansion-and contractionand further permits an inner wall to be short ened for easy removal- Attheintersection of the wallsforming sections; there is disposed a cornerpiece 18 having leaves extending transverselyeofeachaother eitheratright anglesior any "other angle desired according tothe angularrelationv which one wall of a;' building is to have to another .wallthereof.

If "so desired, this corner piece may ;be formed, as shownin Figure 30,.of leav es 19 of metal having hinge ears through which is passed a pin20 in order to form a hinge joint 21. By this arrangement the leaves ofthe" corner piece may be disposed in any desired angular relation toeach other. Tongues 22 extendfromends of the leaves to engage overbarsptj .the wall-s'ectionsi and support corner-piece. 1V

At a 'c'orner of -a'building the sections ofthe inner wall ot the'mold'are'iconnected by brackets secured to the bars 4 of the moldsections. These brackets may consist of" posed at any angle desired; Insome instancesyit'ls desired tohave the leaves of the bracket disposedout of a common plane in order toobtain a good fit in which case the"bolt 30 may be-removed and the leaf'at the right in Figurel'invertedorset'inplace be neath the reduced end of the companion leaf; It'willthus be seen that the relation of the 5 le'avesto each other may beconsiderably variedi V 4, 1

Instead of forming the brackets of leaves which are 'pivotallyconnected,the bracketsmay be of a rigid formation, such as shownin Figure 28,where :the brackets; indicated by the numeraIBO, have fbeen'employed toconnect mold sections at the intersection of aniainwall of abuildingwith one end of a partition wall. yThesei bracketsj have their leavesformed. with longitudinally extending slots 31 to receive "securingbolts and also receive bolts 32bymeans ofwhich feross bars 33" of sapartition 33 may be 'securedvto the brackets in order that a portion ofa dividing wall o fabuildingmay beformed; e The bracket? shown in Figure5 consists of leaves. or-arms 34' and 35ach ofwhich is formed with alongitudinally extending fastener-receiving slot 36 Abearing 37 ispivotally connectedwith one end ofthearnr 35 by a steinor swivel 38,.andthe bearing37 its intoa recess-39- formed in the: leaf 34: whereit-ismounted upon a pivot pin- 40. Bythis arrangement-the leaf- 34 maybe se'- cured to one wall section andthe leaf 35 disposed in. the'sameplane as the leaf 34 atright angles thereto to take the place/ 0f thebrackets shown in Figures 3,4 and 28,01 this'leaf may be swung upwardlyaboutthe pin 40- and if necessary turnedabout the stem 38 in order. todispose the leaf .in desired angular re ation to the leaf 34.; Itwillthus be seen that a mold SfiQtlOIlrtO whichthe leaf. 35 is attachedmay-be disposedat an incline in 1 5 steadoiperpendifiularly Dispositionof." a

mold section v at a desired aiiiclineor angle may alsobe'accomplished'by use-ofsuch a bracket as lS"'Sl1 0WIl' in' Figure "6;; In'this formthe leafll carries'an' eari4c2 which pro jects from one endiandto thisearis piv'o-tally attached a 'beai ingf43 by a screw or bolt 44.Theleafl lfi is connectedwith the bearing 43b a sleeve -46-having asteiir l'? rotatablyen gaged 'throughone end of the leaf and since the'sleeive'46 is secured between ears 48' of the bearing bya pivot pin49:, vit may have turning movementabetween these ears.

By 'havingithe bracket constructed as shown inrthis figurqthelea'f maybe swung horizontallyrrelativeto the leaf lland also ver-.'

tically about the-pinl49 as-well aspbein'g turned about the stem-.47;Therefore, accurate adjustments may be made and a .mold' sectiondisposed in alinement with or transversely of another mold-sectionHIId'FZllSO disposed either perpendicularly or at anincline.

In some cases-a-wall to be erected is of such length thatlwhena'inold.is'set iup itis found that an} end of'a mold section?terminates close toa companionmiold section but 50 and: theadj'acentlend of the mold sectionwhichlis closed byazfiller 53 formed ofsheet metal r By this arrangementthe bolts which secure theacleats: inplace may 'be' released after the concrete :wi'thwvhich the mold isfilled has setandsufficient movement will be permitted to allowtheiinner wall of the mold tabetakianapart; Thefill'er 51. shown. inFigure--12 'is similar-to that shown in Figure 11,-exceptthat itconsists of upper and lower '90 notn'earenough to permit a'pioperjointto sections having contacting". arms '54 through whichpass asecuringbolt' 55; By this air-- rangement thesections ofthe filler may betakerrap'art and used for other purposes.

In some cases'the' buildingto be erected is of :such size that thebuilder does not have suiiicientmold forming sections toextend the fulllength of a wall. In such casescorner sections: are formedrand betweeninner and outer walls ofithe mold are erected-spacing partitionsw56.Eachof these partitions con- I sists of'sections 57 di=sposed verticallyand secured inedge to edge engagement with each other by .a suitablenumber of cross bars or cleats "58 which are releasably secured byscrews, as shown in Figure 29 Strips-59 ex tend longitudinally of thesections 57 at the v opposite:sidesthereof from the cleats 58 in orderto form a recess in a cement partition or end wallsection-formed inthemold and a suit-V ment'there'is-a smallspacebetween the filler V ablenumber of'rods 60 having bent ends 61 are disposed through thepartitionlongitudL- nally of the mold in vertically spaced relationto each other.After the corner portion of the wall has set, the mold is'taken apartand the sections then disposed along the. proper lines to complete thewall between 1ts corner portions. If the mold be long enough to connectthe corner portions of the wall, the spacing partitions may be omittedbut if the mold is of-less length the partitions will be again used.Since the corner portions of the wall will each have a recess in eachend and anchor rods projecting from it, the-connect ing wall sectionwill have portions extending into-these recesses and the extended endsof the anchor rods win be-embeddedt in the conof the leaf 63 where itispivotally mounted by means of a boltor other suitable fastener- 66 andslots 67 are formed in the leaf 64 to. receive securing-screws 68. Theleaf 63 is of greater width than the leaf 64 and in its side portionwhich projects beyond the leaf 64 isformed with a slot 69 to receivesecuring screws 70. By this arrangement the mold sections may bedisposed .in the rela-.

tion of each other shown iii Figure 27 if found necessary; i a 1 In'Fig. 18, therehasbeen shown a wall of concrete having a suitablenumber'of ver-' tically extending reinforcements 72 and transverselyextending .reinforcements 7 3 consisting of metal strips which may bewrapped about the vertical reinforcements if so desired." Eachreinforcement consists of a number ofpipe sections connected byconplings 74 but it is to be understood that separate pipes or bars maybe used. The metal strips serve to firmly hold the inner and outer formsin proper spaced relation to each other, thereby causing the wall-to beproperly moulded and a perpendicular wall formed. Gauge strips may beset in place between the forms before securing the strips 73 to theforms in order to insure proper spacing of-the forms. The metal strips73 .in addition to serving as transverse reinforcements I and braces forthe inner and outer formsalso constitute supports to which nailingstrips 75 of wood, to which inside trim of a house is to be secured. mav befastened by. small nails 76. These strips 7 5 are secured to thestrips 73 by I the nails and set in place after the mold seetions 77 areerected and the strips preferably carry small nails 78 which will beembedded in the wall and prevent the strips from working loose after thewall has been completed.

The bracing strips 73' are initially of such length-thatthey may projectbeyond the mold sections and havetheir end portions split to formtongues 79 which are-bent to,

engageouter side faces ofthe longitudinally extending bars of the moldsections. By this arrangement the mold sections may be held in properengagement with each other as successive tiers of mold sectionsare setin place.

tion to the bars82, thereby forming the fire Wall with ahead or coping84 which projects at opposite sides of the fire wall.

In Figure 25, there has been shown a wall '85. The verticalreinforcements 72 are omitted but metal strips 86 extend transversely inthe mold between its walls 87 In this embodiment of the invention, thestrips 86 extend across themold in spaced relation to upper edges of themold walls and are then bent upwardly, as shown at 88, and outwardly,asshown at 89, with their, ends se-' cured, against side bars 90 of themold by easily removable nails '91; After the concrete has set, themoldis taken apart and the projecting ends of the strip 86 then bent toextend outwardly from the wall, as indicated by dotted lines. Thesections of the mold are then set up with their lower side bars restingupon the projectingends of the strips which may be tacked to thesidebars of the mold sections. By this arrangement a portion of the wallpreviously formed will extend upwardly into the mold, thereby insuringproper positioning of the mold sections. 7 InFigure 21, there has beenshown mold sections 92, 93 and 94 which are assembled to form a wallwhich may have one or both ends disposed at an incline. In thisformation the mold'section 93 is connected with one end of the moldsection '92 by a bar 95 secured against the lower side bars of the. moldsections by bolts 96, the upper end of the mold section 93 being securedby a bracket having leaves 97 secured to the mold sections by bolts 98and having their adjacent ends pivotally connected, as shown at 99. Theupper section 94 may be secured to the section 92 by a suitable numberof clamps 100. -Sections, such as shown in this figure, are em ployed inorder to form the upper portion of a wall of a'house having a slopingroof. -iTheiwalll-Ol shown in Figure 22 is reduced in thickness towardits'top and formed with a tapered or sloping'corner post 102. Whenforming thistype of wall which may be a portion of a building or aretainer wall or garden wall, the mold sections are set up, as shown inFigure 19. Referring to this figure, it will be seen that the moldsections 103 have wedges 104 disposed beneath their lower except thatthey are split l'ongitudinally' to forrn' sectionsIOfi and-108. III-easethe wall i'sto be of anjeven' 'thicknessthroughout its height, thespacers will each consist ofa section 107 and 108 but if the wallis totaper upwardly eachspacer'willconsist of the sec'-. tions 107 v orthe'sections 108 and'these sec- .tions will be'placed-side by side,asshown in 1 Figure l9, with their perpendicular side edges contactingand their inclined side edges disposed outwardly. -Wliensodisposed,ftheouter side edgesof fthe spacers will converge upwardly.

In Figure 23, there has been shown an assemblage whereby a short wall,chimney or the like may be molded. In this assemblage the mold sectionsare ofsuch length that they cannot be disposed with their endsintersecting and form walls'of the proper dimensions. It is not desiredto cut the sections and, therefore, each is disposed with one endbearing against a side face of a mold section and its other end portionprojecting. Cleats 110 are secured against the upper edge faces of themold sections by screws or other fasteners passed through openings 111in the cleats and these cleats project from the mold sections and areformed with heads 112 dis-- posed in a vertical plane and adapted toengage the mold sections and retain them at right angles to each other.If so desired,

certain ofthe sections may have their ends intersectlng and connected aspreviously set forth. 7

When a window opening is to beformed in a wall, the assemblage shown'inFigures figure, it will be seen that the floor joists 113 have theirends embedded in the wall and rest upon a lower wall section previouslymoulded. Strips 114 extend transversely through the wall with theirinner end portions nailed to the side faces of the joists and theirouter ends extending and engaging beneath the lower bars 115 of theouter mold section 116. The inner'mold section 117 rests upon the joistsand the joists are secured in proper spaced relation to each other byspacing plates118 which are secured to the joists by clamps 119. Theplates overlap between joists and are formed with longitudinallyextending slots l20through which bolts 121 are passed. By thisarrangement the plates may be adjusted in relation to each other and thejoists secured in desired spaced relation. The mold sections 116 and117, used when forming window openings, are of a different constructionfrom those used for other portions of a wall. The section 116 carriesbars 122 which are disposed vertically and have reduced ofiset upper endportions. 123 and to these upwardly extending portionsis secureda board124 spaced from the upper'bar 1250f the moldsectionby a bar 126. Thisbarf 126 is-of'a depth similar to'the' bar 1 and. "cooperates 1therewithso "that an outer sill'12'Z for a windowopening may beforn'ied""and project fromthe wall of the building the :necess'ary distance. Theinner mold section has a port on 128 ofiset inorder to formarecess-or-depression'129 iii-a wall beneath a When' forming adoonthemoldse'ctions 133 and iearerming walls Of tlle meld, are i set up asshown in F igure 16; and after "a door frame 135 -has been. setjinplaces metal securing strip 136is passed through the doors "waywith itsends" extending jbetweeiflongitudinally extending bars'137' of the moldsec tions where it is secured by bndingit's ends,

as sho'wn at138:} Cleats'j139 are secured to {the bars 13165 thesectionsforming the inner wallet the meia'aneeverlap the door frame I Iin order to hordme doorirame' firmly in l plae where it will serve asanend wall. for

the mold duringsetti'ng-of the concrete. A

P-filler-Strip 140mm} be set *iriplacelif found ineeessai'yv "Itsh'oirldbeno't edtliat the fac- "mg ofthe inner moldwall 134 may slightly 5overlap th'edooriiframe, thereby fcausing the doori'frameto 'projectinward lyf'a slight ex LtentI-ffBy this arrangement plasterin ay beapplied totheinner" surface of the walliwithout projecting beyondthedooififrameu A' brick building is more expensivea-iidnot as strong or asweather resisting as emcreeeeaur wantedan'outercourse i may be built andan inner form" then erected- .j

13, 14 and 15 is to be used. Referring to this a fl the i t rv i pi n' ah o "1 05 *crete." This-makes a stronger wa'llthan solid "brick. In acellar'construction an inner form r caa' beser up andspacej'betweenfthe" form d the f We ls Of (th ce a fi l i h f concrete;

I have, therefore,aaaadmaa through.

the use of which ureae n ra building may be erected and not only fwalls'formed fal'so d'oor and window openings; .1 have, li furtherprovided aset of molds of such constructiion that walls ,ina-y extend. in fdesired angular relation. to each. other in order vto l form bay windowsand have further provided whereby fire w'alls, chimneysand otherv 'iportions oi} a 1 house 1 or building 1 may be 'i;;for1 ned.'- I havefurtherprovided aset of ;molds. consisting ofsections which may be;;walls: each consisting of section's having 1 1a, includinglongitudinally extending iso bars, bars to connect ends of said sectionsextending between adjacent ends of the sections and overlapping ends ofthe frame bars, the bars being formed with longitudinally extendingslots, and fasteners passed through the slots of the bars to slidablyand pivotally connect the bars and releasably secure the sections in setpositions.

2. In a building mold a bracket to connect mold forming sections, saidbracket having arms pivotally connected to each other for movement inhorizontal and vertical planes, the arms of said brackets beingformedwith longitudinally extending slots whereby tlie arms may besecured'to end portions of mold forming sectlons.

I 3. In a building mold, inner andouter. walls each consisting ofcompan1onsect1ons, 63011860131011 havlnga frame 1nclud1ng longitudinallyextending bars, a facing carried by 7 .said frame at one side thereof,means adjustably connecting adjacent ends of comto mold sectionslongitudinally thereof, one

leaf having a recess leading from one side edge,and a bearing pivoted insaid recess and having a shank swiveledin the other leaf. 7. In abuilding mold, a bracket for con necting ends of mold forming sections,said bracket having leaves adapted to be secured to moldsectionslongitudinally thereof, one

leaf having a tongue extending from its inner end, a hinge block pivotedto said tongue for turning in a plane parallel to the tongue, andasleeve hinged to said block and having a shank, swiveled to the innerother leaf raxially thereof. In testimony whereofl afiix my signature.

JOHN S. FREDERIGK.;

end .of the panion sections whereby the sections may-be a I set up indetermined angular relation to each other withtheir facings disposedinwardly, and spacers disposed vertically in the mold with their sideedges contacting with said walls, each spacer being formed of matingseparable side sections having contacting side 5 edges formed withregistering grooves forming openings through the spacer, and tie rodsdisposed in the grooves through the spacers longitudinally of the moldand projecting from the spacer whereby to be embedded in,

plastic material when the mold' is filled.

4. In a building mold, inner-andouter walls each consisting ofcompanion-sections,

' edges recessed whereby tie rods may be disposed through the spacerlongitudinally of l the mold and embedded in 7 when the mold is filledplastic material 5. In a building mold, innerand outer walls eachconsisting of companion sections,

means to connect said sections to formjwalls,

1 and spacers between said walls disposed transversely thereof withtheir side edges contacting with inner faces of the walls, each spacerbeing formed of matingt'ransversely separable side sections havingcontacting side edges recessed'wher'eby tie rods may be disposed throughthe spacer longitudinally of V the mold and embedded in plastic materialwhen the mold is filled, vertically extending strips being provided onthe spacer sections in abutting relation and forming a recess in one endof a wall section formed in the mold. 6. In a building mold, a bracketfor con ne'cting endsjof mold forming sections, said bracket havingleaves adapted to be secured

